Click here to view fulltext PDF

Permanent link:
https://www.ias.ac.in/article/fulltext/boms/034/06/1189-1195

Gel–sol; anatase; titania; nanoparticles; aging.

Highly crystalline TiO₂ anatase nanoparticles were synthesized via gel–sol method by using titanium isopropoxide and triethanolamine. The products were characterized by X-ray diffraction, transmission electron microscopy, thermogravimetric/differential thermal analysis and nitrogen gas absorption methods. The particle size ranged from 7 to 24 nm having specific surface area of 64 to 220 m²/g. Selective Ti(OH)₄ gel specifications and hydrothermal test conditions resulted in thermodynamically-stable phase-formation. Aging at 130°C for 4 h resulted in particle size of 7 nm; while at 130 and 160°C for 12 h resulted in 12 and 21 nm, respectively.

Sharif Shahini¹ Masoud Askari¹ S K Sadrnezhaad¹

1. Department of Materials Science and Engineering, Sharif University of Technology, P.O. Box 11365-9466, Tehran, Iran

Published

October 2011

Manuscript received

11 February 2011

Manuscript revised

27 April 2011